[Temporary bypass in carotid surgery; peroperative study of various metabolic parameters and the EEG].

Out of a whole of patients of nearly 1000 reconstructive operations of the extracranial carotid artery, which were carried out by a systematic application of the intraluminal shunt, 32 selected patients with extracranial stenosis of the internal carotid artery were examined intraoperatively as to the following parameters of the internal carotid artery and the internal jugular vein: pH, pCO2, pO2, B.E. and the lactate were determined as well. Statistic analysis shows a significant increase of the arteriovenous difference of the lactate from the first to the second and from the first to the third sample.